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参数资料
| 型号： | MCF54418CMJ250 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | MICROPROCESSOR, PBGA256 |
| 封装： | 12 X 12 MM, ROHS COMPLAINT, MAPBGA-256 |
| 文件页数： | 59/60页 |
| 文件大小： | 1107K |
| 代理商： | MCF54418CMJ250 |
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MCF5441x ColdFire Microprocessor Data Sheet, Rev. 6
Preliminary—Subject to Change Without Notice
Hardware design considerations
Freescale Semiconductor
8
2.2.1
Power-up sequence
If EVDD/FBVDD/SDVDD are powered up with the IVDD at 0 V, the sense circuits in the I/O pads cause all pad output drivers
connected to the EVDD/FBVDD/SDVDD to be in a high impedance state. There is no limit on how long after
EVDD/FBVDD/SDVDD powers up before IVDD must power up. IVDD should not lead the EVDD, FBVDD, or SDVDD by more
than 0.4 V during power ramp-up, or there will be high current in the internal ESD protection diodes. The rise times on the
power supplies should be slower than 25 V/millisecond to avoid turning on the internal ESD protection clamp diodes.
2.2.2
Power-down sequence
If IVDD/PVDD are powered down first, sense circuits in the I/O pads cause all output drivers to be in a high impedance state.
There is no limit on how long after IVDD and PVDD power down before EVDD, FBVDD, or SDVDD must power down. IVDD
should not lag EVDD, FBVDD, or SDVDD going low by more than 0.4 V during power down or there will be undesired high
current in the ESD protection diodes. There are no requirements for the fall times of the power supplies.
The recommended power down sequence is as follows:
1. Drop IVDD/PVDD to 0 V.
2. Drop EVDD/FBVDD/SDVDD supplies.
2.3
Power consumption specifications
Table 3. Estimated power consumption specifications
Characteristic
Symbol
Typical
Unit
Core operating supply current (nominal 1.2 V)1
Run mode
Wait mode
Doze mode
Stop00 mode
Stop01 mode
Stop02 mode
Stop03 mode
IVDD
127
33
32
9.3
9.2
3.6
3.4
mA
FlexBus operating supply current
Run mode (application dependent)
Wait mode
Doze mode
Stop00 mode
Stop01, Stop02, Stop03 mode
FBVDD
80
49
42
40
28
mA
SDRAM operating supply current (DDR2 at 1.8 V)
Isys(DQ) [
8, 2DQS]
Isys(WR) [
8, 2DQS]
Isys(RD) [
8, 2DQS]
SDRAM input reference current
Isys(REF)
SDRAM termination current
Isys(termRD)
Total SDIDD MPU side2
SDVDD
SDVREF
SDVTT
3
15
1.3
41
75
mA
Oscillator/PLL operating supply current (nominal 3.3 V)
Run, Wait, Doze, Stop00, Stop01 mode
Stop02 mode
Stop03 mode
VDD_OSC_A_PLL
10
6
1
mA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCF54418CMJ250 | 制造商:Freescale Semiconductor 功能描述:IC 32-BIT MPU COLDFIRE 250MHZ 256-MA |
| MCF5441X | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:MCF5441x ColdFire Microprocessor Data Sheet |
| MCF54450 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ColdFire㈢ Microprocessor |
| MCF54450ACVM180 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 180MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays 制造商:Freescale Semiconductor 功能描述:MCF5445X V4M CORE, MMU, 制造商:Freescale 功能描述:MPU MCF5445X RISC 32-Bit 180MHz 1.8V/2.5V/3.3V 256-Pin MAP-BGA Brick |
| MCF54450AVM240 | 制造商:Freescale Semiconductor 功能描述:MCF5445X RISC 32-BIT 240MHZ 1.8V/2.5V/3.3V 256-PIN MA-BGA BR - Trays |
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